Pork Carcass Composition: I. Interrelationships of Compositional End Points

K. Swensen, M. Ellis, M. S. Brewer, J. Novakofski, F. K. McKeith

Research output: Contribution to journalArticle

Abstract

Thirty pork carcasses were used to evaluate the interrelationships between compositional end points and the accuracy of predicting various end points from one another. Right sides were fabricated into Boston butt, picnic, anterior belly, posterior belly, anterior loin, posterior loin, and ham. Carcass composition was determined on the right side using physical dissection and chemical analyses of soft tissue. Left sides were ground (whole-side grind). Linear measures and chemical composition were made on left sides. Using dissectable components, high (r > .85) correlations occurred between percentage of fat-free lean and percentage of lipid, percentage of dissectable fat, and lipid in the whole-side grind; between weights of dissectable lean and fat-free lean; and between weights of lipid in the whole-side grind and lipid, dissectable fat, and dissectible lean. Dissectable lean percentage and fat (percentage and weight) could be predicted using weight of lipid, weight of fat-free lean, and side weight. Any physical measure could be accurately estimated from any compositional end point (r2 = .79 to .93). Regression equations using 10th-rib linear measures and hot carcass weights predicted compositional end points with R2 > .80, with the exception of dissectable lean (R2 = .56).

Original languageEnglish (US)
Pages (from-to)2399-2404
Number of pages6
JournalJournal of animal science
Volume76
Issue number9
DOIs
StatePublished - Sep 1998

Keywords

  • Carcasses
  • Chemical Analysis
  • Composition
  • Pigmeat

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

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